Self-unloading car



K. BARTH. SELF 'UNLOADING CAR- APPLICATION man DEC. 12. 1913.

Patented Feb 28,1922.

KARL BARTH, or EssnN-oN-rrrn-anrrn,

GERMANY, ASSIGNOR TO FRIED. KRUPP AKTIENGESELLSGHAFT, OF EfiSEN-ON-TI-IE-R-UHR, GERMANY.

snnr-nntoanrne can.

Application filed December 19., 1913.

trated one embodiment of the invention representing a self-unloading car, and

Fig. 1 shows in cross section acar in loading position and Fig. 2, a similar view to Fig. 1 with the car in discharge position. i

In the main,- the present self-unloading carfis of the same constructionas the one shown in the above named copending application, excepting for the differences enumerated below. far as possible, the same characters have been used for similarparts ofthis-as for the car'of the copending application. 1

The two-end walls A are rigidly secured on'the bottom frame A of the car, and these walls are reinforced at their corners by two rods a and a parallelto the longitudinal axis ofthe'car. The bottom B of the self-unloading car is, by means of a shaft 6 revolubly mounted in bearings in the end walls A and this shaft is situated on the side of the car nearest to the rod o The side wall C on this side of the car has a hinged connection with the bottom B and is at its upper end provided with guides 0 which are guided on suitable rollers a mounted on the rod (L The guides c are bent at their upper ends, into hooks 0 with. which they engage the rollers a in the loadingposition of the car, see Fig. 1, so that the bottom B is secured against turning in the direction of the arrow z The opposite side wall C is hinged to the rod a and is provided with hooks 0 at its lower end, which hooks grip under the bottom B and hold it in the loading position as illustrated in Fig. 1. In dischar ing position shown in Fig. 2, the bottom 1% rests on a beam a secured on a bottom frame A of the car. A. push rod D, hinged to the. side wall C is intended both to hold the latter in closed Specification of Letters Iatent.

Patented Feb. 28. 1922.

Serial No. 806,261.

position or to swing it outward to, open by pushing on the rod D, when the hooks 0".

will release the bottom B. r

i The new feature of the present invent-i0 resides therein that the position of the shaft Z2 has been so selected that the bottom B and the side wall C are not able to swing automatically from the open position, that is the discharge position in Fig. 2, into the closed position, that is the loading position in Fig. 1, as is the case with the car represented in the copending application; but that they are instead only brought by hand into the closed position Fig. 1 by the use of, a special drive. For this purpose, a longitudinal shaft E, provided with several parallel crank arms E is mounted 'in bearings .on the under frame of the car, and may be revolved by means of a hand lever E secured to one of its ends. Each crank arm E is connected by means of a link .F, with a tension rod G, hingedto the side c ll C. The link F and the tension rod G are each provided with an abutment f and 9 These two. abutments come into contact when the two members Fand G are approximately in alignment so that the obtuse angle of slightly less than 180 formed by the two members, is turned towards the central plane of the car; compare the posit-ion in dot and dash lines of the members in Fig.2 and of the member F in Fig. 1. In order to secure the hand lever F in its position of rest,in the drawing indicated by dotted lines, apawl H has been provided on one of the end walls A As indicated by full lines in the drawing the crank arms E are directed upwards. with'the hand lever t in the said position, and the tension rods G are both in the closed position as well as in the openposition of the bottom 13, approximately parallel; toarms F In the former case, the tension rods G forms approximately right angle with the links F, and in the latter case an obtuse angle, which is smaller than the angle which the abutments f and 9 form when impinging'with each other.

{During transportation, the hand lever. E is secured to .the end wall A by means of the pawl H. If the car is to be unloaded,

the side wall C has .to be swung outwards, by means of the push rod D, of Whlch 011%;

the portion connected to the side Wall hasbeen shown for the sake of clearness;

of the whereupon the bottom B, actuated by the weight of the load, swings into the open position, Fig. 2. The hand lever E retains during this time its position of rest, and only the members F and G turn from the position shown by full drawn lines in Fig. 1 into the similarly indicated position in Fig. 2.

Whilst in accordance with the embodiment shown in the copending application, the bottom B and the side wall C hinged thereto, thereupon automatically returns to the position shown in Fig. 1, they remain, in consequence of the preponderance, which i the bottom has on its side away from the side wall C, in the position shown in F ig'. 2 in accordance with the present embodiment. If no preponderance existed on this side, the bottom and the side wall C might return to the closed position,Fig. 1, before the car had been completely unloaded, in case the material during its precipitation were ancidentally distributed in such a mass, that pressure against the sidewall G and the portion of the bottom B situated between this side wall and the shaft 5 were approximately the same as, or in. excess of the pressure against the rest of the bottom. This disadvantage may be prevented by a suitable selection of thepreponderance.

When, after unloading, the bottom B is to be swung back into closed position, the

hand lever E is relievedand then turned in the direction of arrow 02, from the dotted position in Fig. 2. The angle formed between the members F and G will then first change until the abutments f and of the links F and the tension rods G abut against each other, as will occur with the parts E E F and G in the position indicatedby dot and dash lines in Fig. 2. In subsequent turning of the hand lever E the members F and G constitute a rigid body, so that the side wall C is drawn downwards and the bottom E simultaneously approaches the closed position. When the bottom B has reached that position in which the hand lever E is situated as indicated by dot and dash lines in 1, the side wall. C will. then be swung inwards by means of the push rod D until the claws. 0 grip underneath the bottom B and retain the latter inplace.

Finally the hand lever E is returnedto its initial position and secured in that position by its pawl H. v The position ofthe bottom and the side wall C are not influenced by this movement hand lever as the members F and G are free to bend inwards. On account of the lever transmission, only a small expenditure of power necessary for transferring the bottom B and the side wall C from the open position, Fig. 2, into the closed position Fig. 1. Y I

Thefarrangement of the drive E E E F G" provides still another advantage p arti'cu For this purpose it will be enough to let the bottom B drop, repeatedly if necessary,

atterit has been raised a certain amount from its pos1t1on in Fig. 2 by means of the drive E E E F G. In consequence of the shakin caused by the striking of the bot-,

tom. of the beam of, the remnants will then detach themselves.

I claim:

1. A self-unloading vessel comprisinga frame, a receptacle of rectangular cross-section when in loading position, said receptacle having two end walls rigidly mounted on said frame, a bottom forming an unl0ading member of the vessel and adaptedto swing about a longitudinal axis of the receptacle situated between the central longi-' tudinal plane and one of the side walls, said side wall forming another unloading mem ber of the vessel, hinged. connection between this side wall and said bottom, an operating member and connection between said unloading members and said operating member; for returning said unloading members into closed position after unloading.

2. A self-unloading vessel comprising a frame, a receptacle of rectangular cross-sec tion when in loading position, said re'cep' tacle having two endwalls rigidly mounted on said frame, a bottom, forming an unloading member of the vessel and adapted to swing about a longitudinal axis of the re ceptacle, situated between the central longi: tudinal plane and one of the side walls, said side wall forming another unloading member otthe vessel, hinged connection between this side wall and said bottom, an operating member, and connection between said unloading members and said operating member for returning said unloading members into closed position after unloading, said op- 11 crating member being independently turn able in andout of closing position while said unloading member are in closed position, but actuating said'unloading members for closing them when in open position.

3. A self-unloading vessel comprising a frame, a receptacle of rectangular cross-section when in loading position, said receptacle having two end walls rigidly mounted on 7 said frame. a bottom, forming an'unloading member of the vessel and adapted to swing about a longitudinal axis of the receptacle, situated between the central longitudinal plane and, one of the side walls, said side wall forming another unloading member of the vessel, hinged connection between this side wall and said bottom, an operating member and connection between said unloadingrhimbers and said operating member'for return- Ling said; unloading members closed-pi sition after unloading, said connection comprising a tension rod hinged to a part positively connected to one of said unloading members, a rock shaft carrying said operating member, a crank arm onsaid rock shaft and a link pivoted to said crank arm and said tension rod.

4.. A self-unloading vessel comprising a frame, a receptacle of rectangular cross-section when in loading position, said receptacle having two end walls rigidly mounted on said frame, a bottom, forming an unloading member of the vessel and adapted to swing about a longitudinal axis of the receptacle, situated between the central longitudinal plane and one of the side walls, said side wall forming another unloading member of the vessel, hinged connection between this side wall and said bottom, an operating member and connection between said unloading members and said operating member for returning said unloading members into closed position after unloading, said connection comprising a tension, rod hinged to a part positively connected to one of said unloading members, a rock shaft carryin said operating member, a crank arm on sai rock shaft and a link pivoted to said crank arm and said tension rod, an abutment on said tension rod and a corresponding abutment on said link cooperating with said first abutment for producing a stiff joint between said link and arm, with said unloading members in open position and said operating member turning in the direction to close them.

5. A car having fixed end walls, a pivotally mounted bottom member, the pivotal axis of which is intermediate the sides of said bottom member, a side member pivotally mounted between the saidend walls and adapted to open outwardly from the car and to close inwardly and downwardly on the outer side of the bottom member, when the latter is in closed position, a vertically movable wall pivotally connected to the bottom member at the side opposite the said side member, and means to raise and lower the said wall and thereby actuate the bottom member and the side member.

The foregoing specification signed at Barmen, Germany, this 18th day of November, 1913.

KARL BARTH. [1 s.]

In presence of- ALBERT Nnrnn, FRANCES Norm. 

